/*  
    This file is part of the Arctic Fox Code Tree (AFCT).
    Copyright 2002, Arctic Fox Computer Consulting Inc.

    AFCT is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    AFCT is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with AFCT; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

package org.afox.util.validators.string;

import org.afox.util.validators.*;

public class InvalidStartValidator extends Validator
{
	private String invalidCharacters;

	public InvalidStartValidator(String invalid)
	{
		super();
		invalidCharacters = invalid;
	}

	public InvalidStartValidator(String invalid, String errorMessage)
	{
		this(null, invalid, errorMessage);
	}

	public InvalidStartValidator(Validator previous, String invalid)
	{
		super(previous);
		invalidCharacters = invalid;
	}

	public InvalidStartValidator(Validator previous, String invalid, String errorMessage)
	{
		super(previous, errorMessage);
		invalidCharacters = invalid;
	}

	protected void validateImpl(Object theParameter) throws ValidateException
	{
		String target = (String) theParameter;
		for (int i = 0; i< invalidCharacters.length(); i++)
		{

			if (target.charAt(0) == invalidCharacters.charAt(i))
				throw new ValidateException(getErrorMessage("Invalid Starting character(" + 
									    invalidCharacters.charAt(i) +")"
									    ));
		}
	}

	protected String getDescription()
	{
		return "Strings cannot start with any of these characters: \"" + invalidCharacters + "\"";
	}
}
